:root{color-scheme:light dark;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;--bg: #f4f5f7;--fg: #111;--muted: #666;--card: #fff;--border: #e3e3e3;--accent: #1a73e8;--err: #b00020;--ok: #137333}@media (prefers-color-scheme: dark){:root{--bg: #0d1117;--fg: #e6edf3;--muted: #9aa4b1;--card: #161b22;--border: #30363d}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg)}.app{min-height:100vh}.app-header{padding:1rem 1.5rem;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:2rem}.brand{font-weight:700;font-size:1.25rem;color:var(--fg);text-decoration:none}.app-nav{display:flex;gap:1rem}.app-nav a{color:var(--muted);text-decoration:none;font-size:.95rem}.app-nav a.active{color:var(--fg);font-weight:600}.app-main{padding:2rem 1.5rem;display:flex;justify-content:center}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:2rem;max-width:480px;width:100%}h1{margin-top:0}form{display:grid;gap:1rem}label{display:grid;gap:.25rem;font-size:.875rem;color:var(--muted)}input{padding:.625rem .75rem;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--fg);font:inherit}button{padding:.625rem 1rem;border:0;border-radius:8px;background:var(--accent);color:#fff;font:inherit;cursor:pointer}button:disabled{opacity:.6;cursor:not-allowed}.muted{color:var(--muted)}.ok{color:var(--ok)}.err{color:var(--err)}dl{display:grid;grid-template-columns:max-content 1fr;gap:.25rem 1rem}dt{color:var(--muted)}code{background:var(--bg);padding:0 .25rem;border-radius:4px}.devices-card{max-width:720px}.devices-table{width:100%;border-collapse:collapse;margin-top:.5rem;font-size:.95rem}.devices-table th,.devices-table td{text-align:left;padding:.5rem .75rem;border-bottom:1px solid var(--border)}.devices-table th{font-weight:600;color:var(--muted);font-size:.85rem;text-transform:uppercase;letter-spacing:.05em}hr{border:0;border-top:1px solid var(--border);margin:1.5rem 0 1rem}